You’ve done the unthinkable. You’ve forced more than a dozen high-profile, safe Republicans to retire because of your constant constituent pressure. You defeated the repeal of the Affordable Care Act. Twice. You’ve supported progressives up and down the ballot in Virginia, Michigan, Washington, and Alabama. And you’ve won.

Most importantly, you’ve created thousands of hyper-local movements across the country that have Republicans and the Trump Administration shaking in their boots.

None of this was imaginable on December 14, 2016 (exactly one year ago!) when we sat down to publish the Indivisible Guide. We were going through stages of grief like so many of you. Republicans were lining up behind the Trump Administration and some Democrats were talking about working with the Trump Administration as though it was a normal Republican Administration. But we, and millions of people across the country, knew nothing about a Trump Administration would be normal.

We heard from friends and family that they wanted to get politically active for the first time. They wanted to make change. They wanted to do whatever it would take to stop the worst parts of the Trump Administration. They wanted to fight back, but they didn’t know where to start.

As former Congressional staffers, we knew that a President’s ability to enact much of his or her agenda relies on whether or not Congress went along with it. And Congress is accountable to their constituents. So we wrote a practical, Civics 101-style document to help newcomers to activism realize their power and leverage in our political system. We called it the Indivisible Guide.

We put the Guide online and went to bed one year ago thinking we’d done a good thing… and maybe a few people would find it useful.

Within days, tens of thousands of people downloaded the Guide and read it. You showed up at town halls with and without your members of Congress. You started making phone calls. You visited their district offices. You put up missing posters (and milk cartons!) with your MoCs’ photos. You took control of the narrative and made sure your elected officials knew they were accountable to you. 6,000 of you even took the Guide and started your own Indivisible Groups and ground the Republicans’ agenda to a halt, while fighting for bold, progressive values.

One year ago, we didn't set out to tell people to have hope. We set out to tell people they have power. And with that power, you gave an entire country hope and showed them resisting the Trump agenda was possible.

Today’s the first anniversary of this movement and we’re celebrating you. We have a lot of fun things in store on Facebook and Twitter to show our gratitude, and we can’t wait for you to see them. But first, we want to share a message and a video we made to commemorate the brilliant work you’ve done this year. Watch now:

This is how it starts. This is how we win. We started with a pretty specific goal: local, defensive congressional advocacy to stop Trump’s agenda. But what we’ve seen around the country is something even more powerful. You’re building a foundational, progressive infrastructure at the community level.

Thank you for everything you’ve done to build this movement. We can’t wait to work with you and take this energy and passion into 2018 as we take back the House (and maybe even the Senate!).